Mamma Mia! The Movie has become Britain's fastest-selling DVD ever.
The musical comedy sold 1.7 million copies on its first day of release, beating the record held by Titanic which came out in 1998.
Mamma Mia! was released in cinemas in July and has taken nearly £70 million at the UK box office.
The film stars Meryl Streep and Pierce Brosnan, and features the music of Swedish pop band Abba. It was based on the successful stage musical.